For decades, people have been securing the air cleaner to a carburetor with a wing nut. Spinning it on and off is slow and often results in dropping it! Replace it with a specially designed mini latch that is a perfect finishing touch to custom build. Requires modification to the air cleaner to fit the latch button. Will not work on stock carb without mod. Diameter of latch: 1.23” stud: 4.125”